Hanging shafts in mills



UNIE

STA S FICE.

HANGING SHAFTS IN MILLS.

Specification forming part of Letters Patent Noi 6,780, dated October9,v 1849*; Reissued May 12, 1857, No. 463.

To all whom z5 may concern.'

Be it known that I, EDWARD BANCROFT, of the city and county ofPhiladelphia and State of Pennsylvania, have invented certain new anduseful Improvements in Mill- Shafting; and I do hereby declare that Athefollowing is a full, clear, and exact descript-ion of the constructionand operation of the same, reference being had to the annexeddrawings,makinga part of this specication, in which- Figure l is ageometrical front elevation of a complete hanger; Fig. 2, a sideelevation thereof; Fig. 3, a transverse section of the same; and F ig.t, a representation of the upper and binding part of t-he socket, bymeans of which the box is held securely in its proper place, whenadjusted.

The improvements referred to, consist in making the bearings or supportsfor shafts, whether hangers or pillow-blocks, in such a manner that theyshall at all times and under any circumstances, conform accurately tothe journals of the shafts; also in being susceptible of easy andaccurate adjustment, in a vertical direction, in case of any sinking orsettlement of the walls or timbers to which they may be attached; and,at the same time, not be more liable to be thrown out of line thanbearings of the ordinary construction; and further, in making theoil-catcher form a part of the box of the hanger or pillow-block, bycasting it thereto, thus giving it additional strength withoutunnecessarily increasing its weight. Said hanger is constructed of fivemainparts (more or less, as the case may require),'viz: the pedestal orprincipal part A; the lower part B of the box, to which the oil-catcheris attached; the upper part or cap C of the box, in which is thereservoir cz and oil conducting orifices the lower socket D, whichsustains the box; and the upper socket E, which by its action retainsthe box securely in its place when adjusted.

The pedestal A of the hanger is attached to the iioor or timbers of themill, by means of screwbolts passing through the holes c (indicated bydots) near its extremities. The form of this part may be varied in orderto adapt it to the situation in which it may be used, whether suspendedfrom the underside of a beam, attached to the side of a post, or restingon the floor or upper surface of a wall; the form will vary according tothe situation, in order that the securing-bolts may be properly applied.

The shaft governs the position of the box with respect to itself, bymeans of the common ball and socket-joint (l, as shown in section inFig. 8. The vertical adjustment of the box is obtained by means of asetscrew e and pinching-nut acting on the underside of the lower socketD, which latter is accurately litted into a cylindrical cavity g in thelower part of the pedestal A. The box is firmly retained and held in itsplace by the upper socket E, which is also accurately fitted in asimilar cylindrical cavity h directly over and in a line with the lowercavity whichholds the socket D, the spherical portion of the box beingthus embraced between these two sockets.

The socket E is furnished with a spiral groove c' cut or cast in itsupper portion, into which groove the end of the setscrew y' enters,acting therein as a nut; and two holes c are drilled through said socketat. right angles near its lower extremity. Theseholes are for thepurpose of introducing a lever and screwing the socket Edown on to thebox after it has been adjusted, when it is retained and prevented fromunscrewing by the setscrew j, which is screwed up tight against thebottom of the spiral groove or thread i. By slacking the set-screw j,the socket E may be run up out of the way to allow of the cap of the boxbeing taken off, for cleaning or any other purpose. The shaft may alsobe taken outI and the lower part of the box may be also removed, withoutaltering in any manner the adjust-ment of the parts, and the whole maybe replaced in their original position with certainty and ease. Thatpart of the box and cap which is embraced by the sockets D and E is madea segment of a true sphere by means of a tool properly adapted for thepurpose, and the concavities of the sockets are accurately made of acorresponding size, so as to insure a close and perfect lit in whateverposition the box may be thrown by the governing action of the shaft.

The advantages possessed by this arrangement are: that it may safely beused for the largest and heaviest kind of millwork, by merelyproportioning the parts to the size of shafts, and the box may berenewed, when worn out, at a very little cost, without altering ordisturbing any other What I do claim as my invention, andl desire toI'secure by Letters Patent is- The general arrangement and constructionof the complete hanger or pillow-block, with or Without the oil-catcherforming a part thereof, made substantially in thel manner and for thepurposes herein above described.

EDWARD BANCROFT.

Witnesses WM. BANCROET, WM. SELLERS.

[FIRST PRINTED 1913.]

